/* ===== Base & Reset ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: #080e1a;
  color: #f8fafc;
  font-family: 'DM Sans', sans-serif;
}

/* ===== Navbar ===== */
#navbar {
  background: transparent;
  transition: background 0.4s ease, box-shadow 0.4s ease, padding 0.3s ease;
}

#navbar.scrolled {
  background: rgba(8, 14, 26, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
}

.nav-link {
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: #2dd4bf;
  transition: width 0.3s ease;
}

.nav-link:hover::after {
  width: 100%;
}

/* ===== Mobile Menu ===== */
.mobile-link {
  position: relative;
}

#mobileMenu.open {
  opacity: 1;
  pointer-events: all;
}

/* ===== Hero ===== */
.hero-content {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUp 0.8s ease forwards;
}

.hero-image {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUp 0.8s ease 0.2s forwards;
}

@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Geometric Background Circles */
.hero-circle {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.circle-1 {
  top: 10%;
  left: -8%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(13, 148, 136, 0.12) 0%, transparent 70%);
  animation: float 8s ease-in-out infinite;
}

.circle-2 {
  bottom: 5%;
  right: 5%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(45, 212, 191, 0.08) 0%, transparent 70%);
  animation: float 6s ease-in-out infinite reverse;
}

.circle-3 {
  top: 40%;
  left: 40%;
  width: 200px;
  height: 200px;
  border: 1px solid rgba(45, 212, 191, 0.1);
  animation: spin 20s linear infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-20px) scale(1.03); }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ===== Service Cards ===== */
.service-card {
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #0d9488, #2dd4bf);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.service-card:hover::before {
  opacity: 1;
}

/* ===== Gallery ===== */
.gallery-item {
  cursor: pointer;
  position: relative;
}

.gallery-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(8, 14, 26, 0.4) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
  border-radius: inherit;
}

.gallery-item:hover::after {
  opacity: 1;
}

/* ===== Testimonials ===== */
.testimonial-card {
  position: relative;
}

.testimonial-card::before {
  content: '"';
  position: absolute;
  top: 16px;
  right: 24px;
  font-family: 'Playfair Display', serif;
  font-size: 6rem;
  line-height: 1;
  color: rgba(45, 212, 191, 0.07);
  pointer-events: none;
}

/* ===== Scroll Animations ===== */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }
.reveal-delay-6 { transition-delay: 0.6s; }

/* ===== Back to Top ===== */
#backToTop.visible {
  opacity: 1;
  translate: 0;
  pointer-events: all;
}

/* ===== Utility ===== */
@media (max-width: 767px) {
  .hero-circle {
    display: none;
  }
}